FMCSA Carrier Profile
DENNIS DIEFENDERFER RODNEY DIEFENDERFER AND JOSEPH DIEFENDERFER
DBA: Jesse Diefenderfer & Sons
East Fallowfield, PA
Active
Authority Active
No Safety Rating
Active 25 yrs, 3 mo
Authority
Active
Common carrier
Insurance
On File
$1,000,000 BIPD
Safety
Not Rated
1st pct · 8 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Operating authority active for 25 yrs, 3 mo
- Insurance on file: $1,000,000
- Vehicle out-of-service rate 50.0% — above the 20.7% national average
- 8 FMCSA inspections on record
Operating Authority
MC309441
Common Carrier, Contract Carrier
Insurance on File
GREAT WEST CASUALTY CO.
BI&PD · $1,000,000 · Policy MCP72051A
Required Filings
Liability (BIPD)
$1,000,000
FMCSA Registration
DOT Number
853580
Operating Status
Active
Safety Rating
Not Rated
Entity Type
Partnership
MCS-150 Filed
December 18, 2025
FMCSA Registration
February 8, 2000
Authority Reinstated
May 14, 2001
Annual Mileage
105,000 mi (2024)
Contact Information
Address
415 Doe Run Road, East Fallowfield, PA 19320
Phone
Email
Owner / Officer
Joseph Diefenderfer
Officer 2
Dennis Diefenderfer
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Safety Percentile
1st percentile
vs. peer carriers
✓ Below FMCSA alert threshold (65th pct) · lower percentile = fewer violations than peers · source: FMCSA SMS
Safety & Inspection Summary
Total Inspections
8
Driver Inspections
6
Vehicle Inspections
2
Total OOS Orders
2
Violations by Category
Vehicle Maintenance2
Unsafe Driving4
Hours of Service1
OOS Rates vs. National Average
Driver OOS Rate16.7% · national avg 5.5%
⚠ Above national average (11.2pp higher)
Vehicle OOS Rate50.0% · national avg 20.7%
⚠ Above national average (29.3pp higher)
Inspection Trend by Year
2026
2025
2024
Inspection Records (8)
| Date | State | Level | Vehicle | Viol. | Status |
|---|---|---|---|---|---|
| May 30, 2026 | WI | Level III — Driver Only | PETERBILT · 1XP5DB9X6XD471755 | 2 | 1 OOS |
| June 24, 2026 | NC | Level III — Driver Only | KW · 1XKWDB9X12J894196 | 0 | Clean |
| February 24, 2026 | DE | Level III — Driver Only | KENWORTH · 1XKWDB9X12J894196 | 1 | Passed |
| May 23, 2026 | GA | Level III — Driver Only | KENWORTH · 1XKWDB9X12J894196 | 1 | Passed |
| September 21, 2024 | IL | Level II — Walk-Around | KW · 1XKWDB9X12J894196 | 2 | 1 OOS |
| May 20, 2025 | FL | Level III — Driver Only | KENWORTH · 2XKWDB9X7SM679737 | 0 | Clean |
| December 15, 2025 | NJ | Level III — Driver Only | KENW · 1XKWDB9X12J894196 | 1 | Passed |
| April 3, 2026 | NJ | Level II — Walk-Around | 1XP5DB9X7VN433359 | 0 | Clean |
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
NJ2
DE1
FL1
GA1
IL1
NC1
and 1 more state
Equipment on Record (9)
Vehicles identified in this carrier's inspection history
| VIN | Make | Inspections | With OOS |
|---|---|---|---|
| 1XKWDB9X12J894196 | Kw | 5 | 1 |
| 1GRAA0827KW161555 | Great Dane | 2 | 1 |
| 1TDL42026CB053423 | Timp | 2 | — |
| 1GR1A082XLW212984 | Great Dane | 1 | — |
| 1GRAA0827HW705142 | Great Dane | 1 | 1 |
| 1W1HEAVE8D33X2887 | Wsn | 1 | — |
| 1XP5DB9X6XD471755 | Peterbilt | 1 | 1 |
| 1XP5DB9X7VN433359 | — | 1 | — |
| 2XKWDB9X7SM679737 | Kenworth | 1 | — |
Authority History
| Date | Status | Type |
|---|---|---|
| June 26, 2015 | INVOLUNTARY REVOCATION | Common |
| May 14, 2001 | REINSTATED | Common Carrier |
| May 25, 2000 | GRANTED | Common Carrier |
| February 10, 2000 | GRANTED | Common Carrier |
| February 10, 2000 | GRANTED | Contract Carrier |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| BI&PD Primary/Excess | Cancellation Pending | |
| April 3, 2000 | COMMON | On Record |
Other Carriers in East Fallowfield, PA
Data sourced from FMCSA MCMIS via Socrata. Last updated: August 17, 2026.
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